Method for forming woven pile fabrics.



No. 882,454. PATENTED MAR. 17, 1908. J. K. DALKRANIAN.

METHOD FOR FORMING WOVEN PILE FABRICS.

APPLICATION FILED MAB..20.1905. RENEWED JUNE 11,1906.

UNITED STATES JAMES KARMI DALKRAN IAN, OF NEW YORK,

PATENT oFFIon.

N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

UNITED STATES PERSIAN CARPET COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

METHOD FOR FORMING WOVEN PILE FABRICS.

Specification of Letters Patent.

Application filed. March 20, 1905, Serial No. 250,980. Renewed. June 11, 1906. Serial No. 321,236.

T all whom it may concern.-

Be it known that 1, James KARMI DAL- KRANIAN, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county and State of New York, have invented a new and Improved Method for Forming Woven Pile Fabrics, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved method for forming woven I pile fabrics of the tufted pile rug type, woven fand described in the application for Letters,

in any desired design and color,the weave havlng Persian knots and being preferably produced on a loom, such for instance as shown warp threads andbeating up the weft and the pile warp thread.

Reference is to be had to the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figures 1, 2, 3, 4, 5 and 6 are perspective views illustrating the consecutive steps necessaryin the formation of the weave; and Fig. 7 is a plan view of the finished fabric.

In order to carry the above-described method into effect I proceed in detail as follows:

In Figs. '1. to 6 are illustrated a pair of ground warp threads a, a, a pile warp thread and a. weft thread 0, it being, however,

understood that in practice a set ofpile warp threads I), selected in color and arranged acwith the ground warp threads a, a between cording to a predetermined pattern, is interlooped with a number of pairs of round warp threads 0, a, and one or more as shown in Fig. 7, three) weft threads 0 are interwoven successive sets of pile warp threads I) to form the complete fabric shown in Fig. 7.

In order to understand the method of weaving'the pile fabric it is sufficient to describe the operation of a single pile warp thread 1) relative to its corresponding pair of ground warp threads (1 (1.

threads (t, a of a pair are arranged approxithe ground warp threads a, a is passed, preferaoly in a downward direction, the pile warp thread b, and then the ground warp threads a, a are crossed in front of the pile warp thread I), as illustrated in Fi The upper end of the pile warp threa b is held fixed, while the lower or loose end of the pile warp thread I) is now looped around the crossing a of the ground warp threads a, a in threads, so that the free end of too pile warp thread I) extends up on the other side of the crossing of, reference to Fi done the groun turned to their normal approximately parallel position, as shown in Fig. 4, that is, are moved back to the former position shown in Fig. 1. The ground warp threads a, a are now opened for the passage of a weft thread 0 (see Fig. 5), and then this weft thread. 0, with the pile warp thread I), is beaten up, as indicated in Fig. 6. If desired, more weft threads may now be interwoven with the ground warp threads a, a in theusual manner, as indicated in Fig. 7.

From the foregoing it will be .seen that by crossing the ground warp threads (1, a, then looping a pile warp thread 7) around the crossing in the direction of the length of the, ground warp threads and'finally returnin the said ground warp threads to a paralle position, a Persian loop is formed, that is, the pile warp threa'd 1) passes under the ground warp thread a, of the other ground warp thread a, is then looped completely around this ground warp thre d .a to extend up between the two ground warp threads 11, a while the other or beginning end of the pile warp thread extends up on the outside of the ground warp thread a. After the formation of the Persian ,knot, the ends of the ile are cut oil a desired distance above the ody of the fabric to render the pile face uniform.

The fabric produced in the man er described is an oriental Weave having ersian 3. When this has been As shown in lug. 1, the ground warp the direction of the length of the ground warp matuiy parallel one to the other, and between as will be readily understood by warp threads at, a arerescribed, but two movements of the pile-warp knots, the pile face ofthe fabric being in any desired colorand 'according'to a predetermined pattern. 1

From the foregoing it Will-be seen that in the formation of the Persian knot, as'dethread 6 are required, that-"is an up and a down movement of the pile warp threadbetween the ground Warp threads of a pair of ground'warp threads, while in the formation ofthis knot as heretofore practiced, four movements of the pile warp thread were required, namely, down between the ground Warp threads, ,up on theoutsideof one ground warp thread, down. between the gro'und warp threads and up on the outside of the 7 other ground warp thread. It will also benoticed that in the formation of the I Persian knot described, the ground warp threads of a pair of ground Warp threa'dsare v crossed and returned to parallel position dursuccessive picks;

ing the interweaving of the pile warpthread withthe ground warpthreads for each Per- ,sian knot, and the said ground warp threads of a pairof ground Warp threads are crossed parallel position I between and: returned to Bythe method described, it is possible to weave a fabric'having Persian knots in a.

very simple-manner and with aloom of comparatively ,SlIliPlG- construction.

Having, thus described' my invention, I

claim as new' and desire to secure by Letters Patent: s,

I. The herein-described'method for weaving tufted pile. fabrics having Persian knots, consisting in passing a pile warp thread between a pair of normally parallel ground warp-threads, then crossing thesaid ground warp threads, then looping the pile uwarp thread around the crossing of. the ground warp threads the direction of the length of the ground warp threads, then returning the ground warp'threads to parallel position,

.insertingia weft between t e ground warp threads, and' beating up the weft. and pile warp thread.

2. The herein-described method for weaving tufted pile fabrics, consistingin passing a pile warp thread between a pair of normally esaeee parallel ground warp-threads, then crossing then looping the-pile warp thread around the crossing of the said ground warp threads,

the ground'warp threads in the direction of the length of the ground warp threads, and

with theends of the pile warp thread extending upwardly on opposite sides of the cross- I .1ng,return1ng the ground warp. threads to parallel position, inserting a weft between the ground warp threads,and beating up the weft and pile warp thread.- 3 3. The herein-described method ror Weaving tufted pile fabricshaving Persian knots,

consisting in passing a pile warp thread'be-' tween a .pair of normally parallel ground warp threads, at an angle thereto,- then crossing the ground warp threads at one "side of the said 'pile warp thread, then passing the loose end of the pile warp thread around they crossing of the ground warp threads-in the direction of the length of the ground warp threads and upbetween the ground warp threads at the other side of the crossing, and

then returning the ground warp threads to parallel position.

4: The herein-described method for weaving a tufted pile fabric having Persian knots, consisting in passing apile warp thread between a pair of normally parallel ground warp threads. at an angle thereto, then crossing the g and warp threads at onefside .of the said pile warp thread, .then passing the loose end of'the pile warp thread around thecrossing of the ground warp threads in the direction of the length of the ground warp threads and up between the ground warp threads at theother side of the crossing, then returning. the ground warp threads to par-o 1 allel position, then inserting a weft between the ground warp threads in front of the loose end of the pile warprthread, and finally beatead and the pile warp 

